Plunger-rod puller.



W. J. LOWRANCE & I. .H. BRYANT.

PLUNGER ROD FULLER. APPLICATION FILED AUG-ZTKIQIS.

Patented June 20, 1916.

2 SHEETS-SHEET l.

Y W. L-LOWRANCE & I. H. BR YANT.

. PLUNGER ROD FULLER.

APPLICATION FILED AUG.27, 1915.

1,188,291. Patented June 20, 1916.

2 SHEETS-SHEET 2.

WILLIAM J'. LOWRANCE AND IVENS'H. BRYANT, OF SHAFTER LAKE, TEXAS.

PLUNGER-ROD 'PULLER.

Specification of Letters Patent. I

Patented June 20, 1916.

To all whom it may concern:

Be it known that we, WILLIAM J. Low- RANGE and IvENs H. BRYANT, citizens of the United States, residing at Shafter Lake, in the county of Andrews and State of Texas, have invented certain new and useful Improvements in Plunger-Rod Pullers; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a device for recludes a plurality of pivotally supported spring controlled jaws for clamping engagement with the plunger rod or the upper end of the well casing for preventing the backward or inward movement of the plunger rod or well casing when the same is being removed from the well. I

With the foregoing and other objects in view,- thisainvention consists in such novel features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings and claimed.

In describing the invention in detail reference will be had to the accompanying drawings wherein likeicharacters designate like or corresponding parts throughout the several views, and in which: 7

Figure 1 is a side elevation of the improved tool, showing the same applied. Fig. 2 is a plan view of the device. Fig. 3 is a fragmentary plan view of the device. Fig.4 is a detail perspective view of a part of the device. Fig. 5 is a perspective view of one of the clamping jaws, and Fig. 6 s a perspective view of one of the gripping sections of the device.

Referring more particularly to the drawings, 1 designates the structure used for clamping the upper end of a section of a well casing indicated at 2. The structure 1 is composed of bars 3 and 4, which are bowed intermediate of their ends, as shown at 5, for engagement with a portion of the outer surface of the casing of a driven well. The ends of the bars 3 and 4 project beyond the bowed portions 5 and are connected by means of a bolt 6. A second bolt 7 connects the bars rearwardly of the bowed portion and forms a support for a pivotally supported clamping jaw member 8. The clamping jaw member 8 has its outer end twisted at right angles to the main body portion of the bar and bifurcated for forming spaced arms 9and 10, the inner edges of which are screwed or corrugated, as is shown at 11, for firmly gripping a plunger rod, indicated at 12, of an ordinary well construction. The bar 8 has a spiral spring 14 connectedfto its rear end, which spiral spring extends upwardly, and is connected to the pin 15, which forms a pivotal pin for the lever 16. The lever 16, has its short end 17, which is remote from its handle end, connected to a pair of plates 18 and 19, which are in turn connected to the bar 8 intermediate its ends, as is shown at 20. The handle bar or lever 16 forms means for moving the bifurcated gripping end of the bar 8 out of a gripping position, and the springs 14 tend to automatically return and to hold the bar 8 in a gripping position.

The outer end of the bars 3 and 4 have a lever 21' pivotally connected thereto, as is shown at 22.' The lever 21 is provided with a plurality of spaced openings 23, which are provided for receiving the pivotal pin 22, which pivotally connects the lever 21 to Y the upper ends of the bars 3 and 4. The lever 21 has a substantially U-shaped member 24 connected to its upper end. The

U-shaped member 24 has its bight portion I 25 bent and positioned substantially at right angles to the legs26 and 27 of the same. The bight portion 25 is provided for extending about the upper end of a plunger rod,

as indicated at 12, and the bifurcated end 31 is connected to one end of the member 29 and to the pin 32, by means of which the legs 26 and27 of the U-shaped member 24 are connected to, the lever 21. The

bar or member 29 has an eyelet 33 connected thereto to which one end of a flexible member 3a is attached. The flexible member 3 1 extends upwardly about a pulley 35, which is mounted upon a pin 35*. The pin 35 is carried by the upper end of a forked member 35, the shank of which extends downwardly through the short end of the lever 21, and is held attached thereto by means of a nut 35 mounted upon the screw threaded end of the forked member The flexible member 3 1 extends over the pulley 35 and it extends rearwardly along the upper edge of the lever 21, having its end remote from the eye 33, connected to the upper angled end 36 of the hand lever 37. The hand lever 37 is pivotally connected at 38 to the lever 21, and it has a plurality of ratchet teeth 39 formed upon the inner or forward edge of the angled portion 36 of its end, which co-acts with a pawl 40' for holding the lever in various adjusted positions, for regulating the position of the member 29.

When the device is used for withdrawing the plunger rod from a well, the bars 3 and 4 are clamped about the upper end of the casing 2 of the well and the plunger rod 12 is inserted through the bight portion 25 of the ,U-shaped member 24. The springs 31 and l-f will move the members 29 and 8, respectively, upon their pivotal connections, causing their bifurcated corrugated end to engage the plunger rod 12 for firmly gripping the same, so that upon pivotal movement of the lever 21, the rod 12 will be drawn upwardly out of the casing 2. When it is desired to move the gripping members 29 and 8 out of engagement with the plunger rod, so as to permit the same to move upwardly through the bowed portion 5 and the bight portion 25, the hand levers 16 and 37 are operated for moving the members up wardly upon their pivotal connections and out of engagement with the rod 12.

From the foregoing description taken in connection with the accompanying drawings the advantages of constru'ction and of the method of operation of the improved plunger rod puller will be readily apparent to those skilled in the art to which this invention appertains, and while in the foregoing description, the principle of operation of this invention has been described together with various features of construction, it is to be understood that certain minor features of construction, combination and arrangement of parts may be altered to suit practical conditions provided such I alterations are comprehended within the scope of what is claimed.

What is claimed is: 1. In a device as set forth, the combination, of a pair of bars having a portion of their length bowed for engagement with a section of its well casing, a lever pivotally connected to the upper ends of said bars, a substantially U-shaped member connected to the upper end of said lever and provided for encompassing a plunger rod, and a pivotally supporting gripping member carried by said U shaped member and adapted for movement into gripping engagement with said plunger rod.

2. In a device as set forth, the combination, of a pair ofbars having a'section of their length bowed for engagement with a section of a well casing, a lever pivotally connected tothe upper ends of said bars remote from said bowed portions, a gripping member pivotally connected to said bars and having its end which is positioned substantially intermediate of the bowed portions of said bars bent at angles to the main body portion thereof and bifurcated, the inner edges of the'bifurcated portions of said member being corrugated for gripping engagement with a plunger rod, a hand lever pivotally connected to said mem ber for moving it out of a gripping position, and a spiral spring connected to said member for moving it into a gripping position.

3. In a device as set forth, the combination, of a pair of bars having a section thereof bowed for engagement with a section of pipe casing, a lever pivotally connected to said bars remote from their bowed portions, a substantially U-shaped member connected to one end of said lever and having its bight portion bent substantially at right angles to the legs thereof, a bar pivotally connected to said legs and having one end thereof bifurcated for forming gripping jaws, the inner edge of said gripping jaws being corrugated, said bifurcated end being positioned within the bight portion of said U- shaped member, a spiral spring connected to said gripping bar and to said lever for moving said gripping members into a gripping engagement, and means for moving said gripping member out of gripping en- 110 gagement.

4. In a device as set forth, the combination of spaced bars having sections of their length bowed for engagement with a section of a well casing, a bar pivotally mounted 115 between said first-named bars, and having its inner end positioned between the bowed portion of said first-named bars and bifur cated for forming spaced gripping arms, the inner facing edges of said spaced gripping 120 arms being corrugated, a hand lever pivotallyconnected to said first-named bars and to said pivoted gripping bar, a spiral spring connected to said gripping bar and to said I first-named bars, a lever pivotally connected to the upper ends of said first-named bars, a substantially U-shaped member connected to the upper end of said lever, the bight portion of said U-shaped member being bent substantially at right angles to the legs thereof, a gripping bar pivotally connected to the legs of said U-shaped member and having its forward end bifurcated for forming gripping jaws, said gripping jaws positioned within the bight portion of said U- shaped member and having their inner facing edges corrugated, a spiral spring connected to the outer end of said pivoted gripping member and to said first-named lever, a pulley carried by the said lever and said U-shaped member, a flexible member connected to said pivoted gripping member and passing over said pulley, said flexible member being connected to a pivotally sup;

ported hand lever which is connected to said first-named lever, a seat formed upon a section of said hand lever, and a pawl pivotally carried by said lever for engagement with said seat for holding said hand lever in Various adjusted positions.

In testimony whereof we aifix our signatures in presence of two witnesses.

Witnesses:

J. M. SNEAD, B0B WHITE.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatente.

Washington, D. G. 

